Matthew Murray Sr. didn't skip a beat on the obstacle course in his '98 Jeep Cherokee. It has a 4.0L inline-six backed by an AX15 five-speed manual transmission. A high-pinion Ford Dana 44 front axle and a 3/4-ton GM rear axle both have Detroit Lockers. It has 36-inch Super Swamper IROKs on Alcoa wheels, and he has less than $5,000 in the Jeep.